@font-face {
    font-family: 'JetBrainsMono';
    src: 
        url(../webfonts/JetBrainsMono-Regular.woff2) format('woff2'),
}

:root {
    /* 深色模式默认变量 */
    --bg-dark: #0f1215;
    --surface: #1c2025;
    --accent: #3498db; /* 青色强调色 */
    --accent-hover: #26C6DA;
    --text-primary: #f2f2f2;
    --text-secondary: #b0b0b0;
    --card-border: rgba(255, 255, 255, 0.08);
    --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* 浅色模式变量 */
@media (prefers-color-scheme: light) {
    :root {
        --bg-dark: #f5f7fa;
        --surface: #feffff;
        --accent: #3498db;
        --accent-hover: #26C6DA;
        --text-primary: #2c3e50;
        --text-secondary: #546e7a;
        --card-border: rgba(0, 0, 0, 0.08);
    }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    transition: background-color 0.5s ease, color 0.5s ease;
}

.article-container {
    max-width: 47rem;
    margin: 0 auto;
    padding: 0 15px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(15, 18, 21, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 0.75rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(0, 188, 212, 0.2);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.navbar.scrolled {
    /* background-color: rgba(15, 18, 21, 0.3); */
    /* padding: 0.75rem 2rem; */
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.navbar-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.submit a{
    color: var(--accent);
}

.logo-icon {
    width: 40px;
    height: 40px;
    margin-right: 12px;
    background-color: var(--accent);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.logo-text {
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--text-primary);
}

.logo-text span {
    font-weight: 600;
    color: var(--accent);
    margin-right: 0.2rem;
}

.nav-links {
    display: flex;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 500;
    font-size: 1.05rem;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: var(--accent);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-links a.active {
    color: var(--accent);
}

.nav-links a.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 移动端菜单样式 */
.mobile-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--surface);
    padding: 1rem 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    z-index: 999;
    transform: translateY(-150%);
    opacity: 0;
    transition: all 0.4s ease;
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
}

.mobile-menu a {
    display: block;
    padding: 1rem 0;
    color: var(--text-primary);
    text-decoration: none;
    border-bottom: 1px solid var(--card-border);
    font-size: 1.1rem;
}

.mobile-menu a:last-child {
    border-bottom: none;
}

.mobile-menu a:hover {
    color: var(--accent);
}

/* 浅色模式适配 */
@media (prefers-color-scheme: light) {
    .navbar {
        background-color: rgba(245, 247, 250, 0.9);
    }
    
    .navbar.scrolled {
        background-color: rgba(245, 247, 250, 0.95);
    }
    
    .logo-text {
        color: var(--text-primary);
    }
    
    .mobile-menu {
        background-color: var(--surface);
    }
}

/* 响应式设计 */
@media (max-width: 992px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
}

/* 自定义滚动条 - 适配深色/浅色模式 */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: #30363d;
    border-radius: 8px;
    border: 2px solid transparent;
    background-clip: content-box;
}

::-webkit-scrollbar-thumb:hover {
    background: #b0b0b0; /* 悬停时变色 */
    border-radius: 8px;
    border: 2px solid transparent;
    background-clip: content-box;
}

/* 适配浅色模式 */
@media (prefers-color-scheme: light) {
    ::-webkit-scrollbar-track {
        background: rgba(0, 0, 0, 0.05);
    }

    ::-webkit-scrollbar-thumb {
    background: #b0b0b0;
    border-radius: 8px;
    border: 2px solid transparent;
    background-clip: content-box;
    }

    ::-webkit-scrollbar-thumb:hover {
        background: rgb(141, 155, 170);
        border-radius: 8px;
        border: 2px solid transparent;
        background-clip: content-box;
    }
}

/* 页头区域 */
.page-header {
    text-align: center;
    margin-top: 6rem;
    margin-bottom: 3rem;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--accent);
    transition: color 0.5s ease;
}

.page-subtitle {
    font-size: 1.4rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    transition: color 0.5s ease;
}

@media (max-width: 768px) {
    .page-title {
    font-size: 2rem;
    }
    
    .page-subtitle {
    font-size: 1.1rem;
    }
}

/* 搜索区域 */
.search-section {
    padding: 20px;
    border-radius: 8px;
    margin: 30px 0;
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.search-form {
    display: flex;
    max-width: 600px;
    flex: 1;
    min-width: 250px;
}

.search-input {
    flex: 1;
    padding: 12px 20px;
    /* border: 2px solid #00a8e8; */
    border: none;
    border-radius: 50px 0 0 50px;
    background: var(--surface);
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 550;
    outline: none;
}

/* .search-input:focus {
    border: 1px solid var(--accent-hover);
} */

.search-btn {
    padding: 12px 25px;
    background: rgba(0, 187, 212, 0.2);
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
    border: none;
    border-radius: 0 50px 50px 0;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.4s ease;
    animation: pulse 2s infinite;
    z-index: 10000;
    letter-spacing: 0.5px;
}

.search-btn:hover {
    background: rgba(0, 188, 212, 0.3);
}

.filter-controls {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-select {
    min-width: 150px;
    flex: 1;
    padding: 12px 20px;
    border: none;
    border-radius: 50px;
    background: var(--surface);
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 500;
    outline: none;

}

/* 分类标签样式 */
.news-tag {
    display: inline-block;
    padding: 4px 10px;
    background: rgba(0, 168, 232, 0.2);
    color: var(--accent);
    border-radius: 12px;
    font-size: 0.85rem;
    margin-right: 8px;
    margin-bottom: 10px;
    text-align: center;
}

/* 空状态样式 */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    background: var(--surface);
    border-radius: 10px;
    margin: 30px 0;
    display: grid;
}

.empty-state i {
    font-size: 3rem;
    color: var(--accent);
    margin-bottom: 20px;
}

/* 主内容区 - 新闻卡片布局 */
.news-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
    gap: 25px;
    margin: 40px 0;
}

.news-card {
    background: var(--surface);
    border-radius: 16px;
    padding: 2rem;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--card-border);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.news-card:hover {
    transform: translateY(-10px);
    border-color: rgba(0, 188, 212, 0.4);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.card-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    position: relative;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .card-image img {
    transform: scale(1.05);
}

.image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #0d2b45, #1e415f);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #5d7ca0;
}

.card-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.news-date {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.news-author {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.news-title-container {
    height: 80px; /* 固定高度 */
    display: flex; 
    align-items: center; /* 垂直居中 */
    justify-content: flex-start; /* 水平靠左 */
    margin-bottom: 10px;
    position: relative;
    overflow: hidden;
}

.news-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--accent);
    transition: color 0.3s ease;
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;

    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 0;
    margin: 0;
    width: 100%;
    text-align: left; /* 文字水平靠左 */
    padding-right: 10px; /* 避免文字贴边 */


}

.news-card:hover {
    color: #00e1ff;
}

.news-excerpt {
    color: var(--text-secondary);
    margin-bottom: 15px;
    flex: 1;

    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-height: 1.5em;
    max-height: 3em;
    min-height: 3em;
}

.read-more {
    display: inline-block;
    padding: 8px 16px;

    margin-top: auto;

    background: rgba(0, 188, 212, 0.1);
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
    border: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.4s ease;
    animation: pulse 2s infinite;
}

.read-more:hover {
    background: rgba(0, 188, 212, 0.2);
    color: var(--accent-hover);
}

/* 登录/注册模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1001;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: var(--surface);
    padding: 2rem;
    border-radius: 10px;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    position: relative;
}

.close-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.close-btn:hover {
    color: var(--accent);
}

.auth-tabs {
    display: flex;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--card-border);
}

.tab-btn {
    padding: 0.5rem 1rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

.tab-btn.active {
    color: var(--accent);
    border-bottom: 2px solid var(--accent);
}

/* 分页控件 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 30px 0;
    gap: 15px;
}

/* 参考 photo-wall-inner-btn */
.page-btn {
    padding: 10px 20px;
    background: rgba(0, 188, 212, 0.1);
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
    border: none;
    border-radius: 25px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.4s ease;
    animation: pulse 2s infinite;
    z-index: 10000;
    letter-spacing: 0.5px;
}

.page-btn:hover {
    background: rgba(0, 188, 212, 0.2);
    color: var(--accent-hover);
    /* transform: translateY(-3px); */
    box-shadow: 0 10px 25px rgba(0, 188, 212, 0.2);
}

.page-btn:active {
    transform: translateY(1px);
    box-shadow: 0 4px 16px rgba(0, 188, 212, 0.2);
}

.page-btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.page-info {
    padding: 10px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.4s ease;
    animation: pulse 2s infinite;
    z-index: 10000;
    letter-spacing: 0.5px;
}

.page-jump {
    display: flex;
    align-items: center;
    gap: 10px;
}

.page-jump span {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-secondary);
}

.page-input {
    width: 60px;
    padding: 8px 10px;
    background: var(--bg-dark);
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    border: none;
    border-radius: 25px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.4s ease;
    animation: pulse 2s infinite;
}

/* 参考 photo-wall-inner-btn */
.page-go {
    padding: 10px 20px;
    background: rgba(0, 188, 212, 0.1);
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
    border: none;
    border-radius: 25px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.4s ease;
    animation: pulse 2s infinite;
    z-index: 10000;
    letter-spacing: 0.5px;
}

.page-go:hover {
    background: rgba(0, 188, 212, 0.2);
    color: var(--accent-hover);
    /* transform: translateY(-3px); */
    box-shadow: 0 10px 25px rgba(0, 188, 212, 0.2);
}

.page-go:active {
    transform: translateY(1px);
    box-shadow: 0 4px 16px rgba(0, 188, 212, 0.2);
}

/* 页脚 */
.footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding: 2rem;
    border-top: 1px solid var(--card-border);
    margin-top: 4rem;
    transition: all 0.5s ease;
}

/* ICP备案号样式 */
.icp-footer {
    margin-top: 1rem;
    font-size: 0.9rem;
}

.icp-footer a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.icp-footer a:hover {
    color: var(--accent);
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 25px;
    background: rgba(15, 80, 140, 0.9);
    color: white;
    border-radius: 5px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    transform: translateX(120%);
    transition: transform 0.3s ease;
}

.notification.active {
    transform: translateX(0);
}

.article-meta {
    color: var(--text-secondary);
    font-size: 1rem;
    display: flex;
    justify-content: center;
    gap: 25px;
    flex-wrap: wrap;
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.article-banner {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: 8px;
    margin: 20px 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

/* Markdown样式，应与门户网站的styles.css的.photo-detail-text保持一致 */
.article-content {
    background: var(--surface);
    border-radius: 16px;
    padding: 2rem;
    transition: var(--transition);
    border: 1px solid var(--card-border);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    margin-bottom: 30px;
    color: var(--text-primary);
}

.article-content h1 {
    color: var(--accent);
    margin-top: 0.8em;
    margin-bottom: 0.8em;
    border-bottom: 2px solid rgba(0, 168, 232, 0.3);
    padding-bottom: 10px;
}

.article-content h2 {
    color: var(--accent);
    margin-top: 0.8em;
    margin-bottom: 0.8em;
}

.article-content h3 h4 h5 h6{
    color: var(--accent);
    margin-top: 0.6em;
    margin-bottom: 0.6em;
}

.article-content p {
    margin-bottom: 0.8em;
    line-height: 1.8;
}

.article-content a {
    color: var(--accent);
    /* text-decoration: none; */
    transition: all 0.3s ease;
}

.article-content a:hover {
    color: var(--accent-hover);
    /* text-decoration: underline; */
}

.article-content ul, .article-content ol {
    margin-left: 25px;
    margin-bottom: 1.5em;
}

.article-content li {
    margin-bottom: 0.5em;
}

.article-content code {
    background: rgba(85, 85, 85, 0.3);
    padding: 2px 6px;
    border-radius: 6px;
    font-family: 'JetBrainsMono','monospace', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

.article-content pre {
    background: rgba(85, 85, 85, 0.3);
    padding: 15px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 1.5em 0;
}

@media (prefers-color-scheme: light) {
    .article-content code {
        background: rgba(85, 85, 85, 0.088);
    }
    .article-content pre {
        background: rgba(85, 85, 85, 0.088);
    }
}

.article-content pre code {
    background: none;
    padding: 0;
}

.article-content blockquote {
    border-left: 4px solid #00a8e8;
    padding: 10px 20px;
    margin: 1.5em 0;
    background: rgba(0, 168, 232, 0.1);
    border-radius: 0 4px 4px 0;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
}

.article-content th, .article-content td {
    border: 1px solid rgba(0, 168, 232, 0.3);
    padding: 10px;
    text-align: left;
}

.article-content th {
    background: rgba(0, 168, 232, 0.2);
    color: #64eaff;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    margin: 15px 0;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

/* 返回 */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 168, 232, 0.5);
    margin-bottom: 6rem;
    float: left;
}

.back-link:hover {
    background: var(--accent-hover);
    color: white;
    transform: translateY(-2px);
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0;
    justify-content: center;
}

.article-tag {
    padding: 6px 15px;
    background: rgba(0, 168, 232, 0.2);
    color: #64eaff;
    border-radius: 20px;
    font-size: 0.9rem;
}

@media (prefers-color-scheme: light) {
    .article-tag {
        background: rgba(0, 166, 232, 0.115);
        color: var(--accent);
    }
}

/* 响应式设计 */
@media (max-width: 992px) {
    .article-container {
        max-width: 38rem;
    }
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 15px;
    }

    .news-container {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
    
    .page-title {
        font-size: 2.2rem;
    }
    
    .search-section {
        flex-direction: column;
        align-items: stretch;
    }
    
    .article-title {
        font-size: 2rem;
    }
    
    .article-meta {
        flex-direction: column;
        gap: 10px;
    }

    .article-container {
        max-width: 34rem;
    }
}

@media (max-width: 576px) {
    .news-container {
        grid-template-columns: 1fr;
    }
    
    .news-card {
        flex-direction: column;
    }
    
    .search-form {
        flex-direction: column;
        gap: 10px;
    }
    
    .search-input, .search-btn {
        border-radius: 50px;
        width: 100%;
    }
    
    .pagination {
        flex-wrap: wrap;
    }
    
    .filter-controls {
        width: 100%;
    }
    
    .filter-select {
        flex: 1;
        min-width: 120px;
    }
    
    .article-title {
        font-size: 1.8rem;
    }
    
    .article-content {
        padding: 20px;
    }

    .article-container {
        max-width: 28rem;
    }
}

/* 特定元素禁止选中 */
.card-image, .article-banner, .read-more, .search-form {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}